Campbell, Douglas Houghton,    1859-1953. <br/><br/>
The structure & development of the mosses & ferns (Archegoniatae) / 
Douglas Houghton Campbell. 
 - London  :  Macmillan and co.,  1895. 
 - viii, 544 p. :   ill. ;  23 cm. 
<br/><br/>Bibliography: p. [521]-534. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plant morphology.
<br/><br/><label>LC Class. No.: </label>SPE 0817